Magnesium - aluminium alloys are widely used in circraft
construction. one particular alloy contains 70.0% al and
30.0% mg. how many grams of halg) are produced in
the reaction of 0.710g samples of this alloy with excess
heleg?
2 alig + 6hcl(aq) – 2 acc( 3 lags + 3h2 lg)
mg(s) + 2hcl(aq) - mg cl2 lag) + h2 lg)

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium